Dressing textile threads



Patented Aug. 9, 1938 UNITED S ATES PATENT or-ricn 2,126,000 DRESSINGTEXTILE THREADS Henry Hans l-reund, Cliilside Park, N. 1., assignor toE. I. du Pont de Nemonrs a. Company,

Wilminm n, Del, a corporation, of Delaware No Drawing. ApplicationJanuary 9, 1937, Serial ,10 softened and lubricated. Hitherto, animal orvegetable oils. in combination with paraflln oils have been used asdressing. softening, or lubricating compositions for textile threads.,While paraflln oils alone are unsatisfactory for dressmg textile yarnsinasmuch as they soften the yarn to only a very slight degree and areremoved from the yarn only with a great deal of difilculty, it isdesirable to add a certain amount of such an oil to vegetable or animaloil. com-,5

characteristics:

positions in order to get a desirable viscosity, easy penetration of oilinto the textile yarn and a reduction in the quantity of the expensiveanimal or vegetable oil used. Furthermore, ani

mal and vegetable oils are susceptible to oxidation, which deleteriousiyaffects the yarn treated with these oils. It has, therefore, been foundde-- ads, such as those formed from resenera cellulose, cellulosederivatives and the like, 35 dressed with an improved composition.

A er object is to provide a. mintion that produces a very satisfactorysoftendat we same time re moved from the itt hereiter.-

e objects of this inv mtion are in general uccomplished by dr textile rsor thr, n -1 iy artih W as regener-. ose derlvatlvw and the like, with acomposition comp w: naphthenes and one or more 1 no or vegetable oils.

Naphthenes in general are saturated cyclic by- W and are contained in 1-eral oils from all parts of ii world. They arepredominant in the i oilssuch as from 'Baku, German oils such as from Wietze, Roumanian oils, andoils from certainsouth Ameri- 65 cancountries such as Aruentina. Theyoccur tahle oil used and of the 1 Claims. (01. za-n to some extent in;every crude natural oil.

Naphtheneoils are now available in commercial form such that the productcontains no more than 2 or 3% unsaturated materials and with a 5,

suitable viscosity at boiling point range as to make them eminentlysuited as components in thread dressing composition. It is desirablethat,

the crude oil containing the naphthene be carefully fractionated withinreasonably narrow boil- 1o ing limits so as to produce a product freefrom very light and very heavy fractions. Theselected fractions ofnaphthenes are desired for the dressingof textile yarns because they canbe more readily removed with a smaller amount of emul- 15 siiying agentin the boil-,ofl than if the fractionating were not so carefully done.

v The naphthene oil composition which has given the most satisfactoryresults has the following Boiling point range: 550 F. to 715 F.

Saybolt viscosity at 100 F.: 65 seconds Unsaturated matter: Less than 3%Pou'rtest:60l*. G Color: Substantially none.

Other naphthenes however, may also be used such as those boiling in therangehilil F. to 800 1?. or having a viscosity between 50 and 75 sec--ends at 100 F. or even outside these limits. ,The naphthenes which canbe satisfactorily used depend upon the textile thread, the w 1 or vea 1-w l other factors; 1

will he The naphes herein described in combination with any of the 1| 1or vegetahle oils coonly used as sol or lubriu agents. such as, oliveoil, cotton oil, 1 w oil, ut oil, neats-ioot oil. lard oil, and thelike. Instead oi it i on tahle-ore may he w million w 4 or veuetuhle vor. oil t The w oi themes in com tions should in general be irom it itor more.

te may i M he included in the comswtions ritm; for the 1: a am a mlvegetable oil such heta-naphthol, dipheny the amount oi a or etable oilsused w l 1 be reduced to some extent by the addition of a phosphatidesuch as lecithin in an cunt from 0.1 to 3.0% or more of cation. in orderto improve the softening power of the animal or vegetable oil and rendertreated thread more supple. To more clearly explain this invention therearetersetforthspecificlllustrativecom positions which are suitable fordressing artificial threads formed or regenerated cellulose or celluloseacetate:

Example I L Percent- Olive oi 35 Naphthene oil 65 Example II PercentOlive nil 15 Palm oil 10 Lecithin 0.5 Beta-naphthol 0. 1 Naphthene nil74.4

Since naphthenes in general have greater pene- V trating power thanparafin oils, yarn treated with these compositions is somewhat softerthan that obtainable by using similar compositions wherein paraffin oilis used in place of the naphthene oil. Furthermore, yarns so dressed canbe readily knit at high speeds with a higher number of stitch count thanis possible with the prior art compositions containing parafiin oil.

- Though the invention has been described in connection with artificialthreads formed of regenerated cellulose, cellulose acetate, etc., theinvention is not restricted thereto. It is equally applicable to alltextile threads.

The dressing composition may be applied to the yarn in any suitablemanner. In the preferred mode of use, the composition is intermittentlyor continuously applied to the yarn while it is being a wound insuitable packages, for example, cones, by appropriate mechanical devicessuch as those used on winding machines for oiling thread.

Since it is obvious that various changes may be made in the specificdetails hereinabove set forth,

this invention is not restpcted thereto except as set forth in theappended claims.

I claim:

1. Textile threads dressed with a composition comprising at least 50%unsubstituted naphthenes and at least one material taken from the classconsisting of animal oils, vegetable oils. sulfonated animal oils,sulionated vegetable oils, and

' sulfonated mineral oils.

2. Textile threads dressed with a composition comprising an animal ofland at least 50% unsub- 'stituted naphthenes. I

3. Textile threads dressed with a-composition comprising a vegetable oiland at least 50% unsubstituted naphthenes.

4. Artificial textile threads dressed with a composition comprising atleast 50% unsubstituted naphthenes and at least 'one material taken fromthe class consisting of animal oils, vegetable oils, sulionated animaloils; sulfonated vegetable oils, and sulfonated mineral oils.

5. Regenerated cellulose threads dressed with a composition comprisingat least 50% unsubstituted naphthenes and at least one material takenfrom the class consisting of animal oils, vegetable oils, sulfonatedanimal oils, suli'onated vegetable oils, and sulfonated mineral oils.

6. A composition for'dressing textile threads comprising at least 50%unsubstituted naphthenes and at least onematerial takenfrom the classconsisting of animal oils, vegetable oils, sulfonated animal oils,sulfonated vegetable oils, and sulfonated mineral oils.

7. Textile threads dressed witha composition.

comprising at least 50% unsubstituted naph thenes.

HENRY HANS FREUND.

